As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELECTRICAL ODOR IN CARGO AREA. INSPECTED WIRING TO CARGO SMOKE DETECTORS. INSPECTED WIRING IN AFT CARGO BAY, LT AND RT BATTERY AND PDU COMPARTMENTS. ALL SMOKE DETECTORS TESTED GOOD. ODOR BELIEVED TO BE FROM A/C SITTING IN HEAT CLOSED UP ALL DAY.